KCET · Physics · Communication System
The process of super imposing message signal on high frequency carrier wave is called
- A Amplification
- B Demodulation
- C Transmission
- D Modulation
Answer & Solution
Correct Answer
(D) Modulation
Step-by-step Solution
Detailed explanation
The process of super imposing message signal on high frequency carrier wave is called modulation. It is usually applied
to electromagnetic signals. Common modulation methods are - amplitude modulation, frequency modulation, phase
modulation.
to electromagnetic signals. Common modulation methods are - amplitude modulation, frequency modulation, phase
modulation.
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- Given, a current carrying wire of non-uniform cross-section, which of the following is constant throughout the length of wire?KCET 2025 Easy
- A coin placed on a rotating turn table just slips if it is placed at a distance of \(4 \mathrm{~cm}\) from the centre. If the angular velocity of the turn table is doubled it will just slip at a distance ofKCET 2021 Easy
- A body having a moment of inertia about its axis of rotation equal to \( 3 \mathrm{~kg} \mathrm{~m}^{2} \) is rotating with
angular velocity of \( 3 \mathrm{rad} s^{-1} \). Kinetic energy of this rotating body is same as that of a body of
mass \( 27 \mathrm{~kg} \) moving with velocity \( \mathrm{v} \). The value of \( \mathrm{v} \) isKCET 2014 Medium - A charge \( q \) is accelerated through a potential difference \( V \). It is then passed normally through
a uniform magnetic field, where it moves in a circle of radius \( \mathrm{r} \). The potential difference
required to move it in a circle of radius \( 2 r \) isKCET 2018 Easy - Variation of resistance of the conductor with temperature is as shown

The temperature co-efficient \( (\alpha) \) of the conductor isKCET 2016 Easy - Dimensional formula for the universal gravitational constant isKCET 2008 Easy
More PYQs from KCET
- The tangent to the curve \( y=x^{3}+1 \) at \( (1,2) \) makes an angle \( \theta \) with y axis, then the value of \( \tan \theta \) isKCET 2014 Medium
- The standard electrode potential for the half-cell reactions are
\[
\begin{aligned}
&\mathrm{Zn}^{2+}+2 \mathrm{e}^{-} \longrightarrow \mathrm{Zn} ; \mathrm{E}^{\circ}=-0.76 \mathrm{~V} \\
&\mathrm{Fe}^{2+}+2 \mathrm{e}^{-} \longrightarrow \mathrm{Fe} ; \mathrm{E}^{\circ}=-0.44 \mathrm{~V}
\end{aligned}
\]
The emf of the cell reaction,
\(\mathrm{Fe}^{2+}+\mathrm{Zn} \longrightarrow \mathrm{Zn}^{2+}+\mathrm{Fe}\) isKCET 2009 Easy - The two electrons have the following set of quantum numbers :
\[
\begin{array}{l}
P=3,2,-2,+\frac{1}{2} \\
Q=3,0,0,+\frac{1}{2}
\end{array}
\]
Which of the following statement is true?KCET 2015 Medium - The value of
\(e^{\log _{10} \tan 1^{\circ}+\log _{10} \tan 2^{\circ}+\log _{10} \tan 3^{\circ}+\ldots+\log _{10} \tan 89^{\circ}}\)
isKCET 2023 Medium - For the LPP, maximize \( z=x+4 y \) subject to the constraints \( x+2 y \leq 2, x+2 y \geq 8, x, y \geq 0 \)KCET 2018 Medium
- The contrapositive of the converse of the statement "If \( x \) is a prime number then \( x \) is odd" isKCET 2016 Medium